JP2001087964A - Vertical type machining center - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact machining center of vertical type allowing easy handling of chips produced from machining. SOLUTION: A column 3 is installed upright on a bed 1, and X-axis guide surfaces 3a and 3b are formed on the front surface of the column 3. A saddle 5 moving to the left and right is installed on the X-axis guide surface and is furnished with Z-axis guide surfaces 5a and 5b where a spindle head 11 moving in the vertical direction is installed. Y-axis guide surfaces 1a and 1b are formed on the bed 1, where a table 17 moving fore and aft is installed. The processing region is surrounded by a splash guard and an X-, Y-, and Z-axis cover, and the chips from machining and the processing liquid are received by bottom surface covers installed on the left and right of the table 17 and dropped into a chip bucket situated below.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical machining center having a vertical spindle.

[0002]

2. Description of the Related Art A vertical machining center is rotatably supported with a vertical axis at a spindle head, and has an X-axis between a vertical spindle on which a tool is detachably mounted at a tip portion and a table for fixing a work. , Y, and Z are processed relative to each other in three orthogonal directions. In this case, there are various configurations of the X, Y, and Z feed axes. Representative configurations are the following three examples. In the first configuration example, a saddle that moves in the X-axis direction is provided on a bed, a table that moves in the Y-axis direction is provided on the saddle, and a spindle head that moves in the Z-axis direction is provided in a column. In a second configuration example, a table that moves in the X-axis direction is provided at a front portion on the bed, a column that moves in the Y-axis direction is provided at a rear portion on the bed, and a main shaft that moves in the Z-axis direction is provided on the column. is there. In a third configuration example, the table is fixed to a front portion on the bed, a saddle that moves in the X-axis direction at the rear portion on the bed, a column that moves in the Y-axis direction on the saddle, and a column that moves in the Z-axis direction. Is provided with a spindle head that moves.

In order to make the whole machine compact including these configuration examples, at least one of the X, Y, and Z-axis moving bodies, for example, a table moves the X-axis or Y-axis guide surface through a full stroke. , There is a case where the overhang from the guide surface occurs near the stroke end. If the configuration does not cause overhang, the guide surface must be lengthened, and the entire machine becomes large. In addition, the vertical machining center is configured to cover the periphery of the machining area with splash guards and covers to prevent chips and machining fluid from scattering around and guiding surfaces, feed drive mechanisms, and intrusion into electrical components. I have. In particular, X,
A complicated structure is required such that the cover is expanded and contracted according to the movement of the Y and Z axes, and a splash guard is provided with an opening / closing door for confirming the processing result and setting up the work.

[0004] When the work is further processed, a large amount of chips are generated, and it is necessary to collect and collect the chips. In order to automatically collect and collect chips, a screw conveyor, a scraper conveyor, a lift-up conveyor, and the like are provided in a place where chips are stored and in a processing liquid tank. In the case of processing using a processing liquid, the processing liquid is collected in a processing liquid tank, filtered, and then supplied to the processing unit again. in this case,
The installation location of the processing liquid tank is often on the rear side of the machine so as not to hinder the processing operation of the operator.

[0005]

In the case of the first configuration example described above, the weight of the work acts on both the X-axis and Y-axis guide surfaces and the double feed mechanism. When the weight of the work is light and heavy, there is a difference in the deformation of the guide surface and the feed accuracy.
This has an adverse effect on the two axes of X and Y. In the case of the second configuration example, the column is usually a large configuration and heavy. Then, the Y-axis guide surface is far away from the processing portion. A moment load is applied to the guide surface in accordance with the cutting resistance and the distance from the processed portion where the cutting resistance is acting to the guide surface. In other words, there is a problem that the moment load increases and the deformation of the guide surface and the feed resistance increase.
Also, the heavy weight of the column itself has already placed a burden on the Y-axis feed mechanism.

In the case of the third configuration example, a large saddle for supporting the weight of the column is further interposed below the column, a large moment load acts on the X and Y axes, and the column and the saddle are large. There is a problem that the own weight also acts on the two axes of X and Y. As can be seen from this configuration example, X,
It is understood that it is advantageous that the Y and Z guide surfaces are as close as possible to the processing portion, and that it is better to use a light-weight component as the moving body.

[0007] Next, it is known that the overhang from the guide surface of the moving body extremely deteriorates the moving posture of the moving body. The table of a vertical machining center usually has a rectangular shape that is long in the X-axis direction and short in the Y-axis direction. When the table is moved in the X-axis direction as in the configuration example 2, the X-axis guide surface formed on the bed becomes too long, and the table may be overhanged due to the restriction that the machine must be compact. In addition, the guide surface for guiding a large moving body such as a column as in the configuration examples 2 and 3 has to be lengthened accordingly. This indicates that it is advantageous to move the table in the Y-axis direction, and it is better to use a small component as a moving body.

[0008] The periphery of the processing area must be covered with a splash guard or a cover over substantially the entire circumference in three dimensions. Normally, three covers for extending and retracting the X, Y, and Z axis guide surfaces and the feed mechanism, a splash guard for covering the front and both sides of the machine, and an X axis and a machine with the upper part of the main spindle head protruding from the upper surface of the splash guard. It consists of a slide-type cover that movably covers in the Z-axis direction and a bottom cover that covers the bottom of the processing area. Since the sliding cover has a complicated mechanism, it is often not provided. In any case, splash guards and covers are complicated in structure, have many parts, and increase costs. With the configuration in which the slide-type cover is omitted, it is not possible to prevent chips and processing liquid from scattering.

[0009] The slide-type manual opening / closing door of the splash guard may be opened carelessly during processing, or may be closed and pinched while working while being opened.
In order to prevent this, a configuration is provided in which means for closing the door at the closed position and the open position are provided. Further, in order to manually collect the chips generated by the processing, a method has been adopted in which the machine is stopped, the processing liquid is not dropped, and the chips are scraped out from the chip receiver at the top of the processing liquid tank. Processing is interrupted during this operation, and there is a problem in terms of processing efficiency. The machining fluid tank is located at the rear of the machine as described above, and requires a large maintenance space for changing the machining fluid and cleaning the machining fluid tank.

An object of the present invention is to solve these problems. In other words, the load acting on the guide surface and the feed mechanism is reduced as much as possible, and a mechanical configuration with high feed accuracy is obtained, the configuration of the splash guard and covers that cover the processing area is made as simple as possible, and the swarf and the cutting fluid are scattered To prevent the splash guard opening / closing door, chip collection, and handling of the machining fluid tank. Accordingly, it is an object of the present invention to obtain a vertical machining center having good machining accuracy, high operability, simple structure, and space saving.

[0011]

In order to achieve the above object, a bed serving as a base, a column erected on a rear portion of the bed, and an X-axis provided on a front surface of the column in a horizontal direction. A saddle that moves along a guide surface, a spindle head that moves along a Z-axis guide surface provided in a vertical direction on the front surface of the saddle, and rotatably supports a vertical spindle; A table that moves along a Y-axis guide surface provided in a horizontal front-rear direction orthogonal to the X-axis guide surface and the Z-axis guide surface, a splash guard that covers a front surface, left and right side surfaces, and a top surface of a processing area; An X-axis cover, which is provided between the left and right sides of the saddle and the left and right sides of the splash guard so as to extend and contract, and covers the X-axis guide surface;
Between the front surface of the table and the front surface of the splash guard, and between the rear surface of the table and the front surface of the column is provided so as to be extendable and contractible, and is formed in a mountain shape that is inclined downward in the left-right direction, A Y-axis cover that covers the Y-axis guide surface, a Z-axis cover that covers the Z-axis guide surface above and below the spindle head, and is provided between left and right sides of the table and both side surfaces of the splash guard; There is provided a vertical machining center comprising: a chip falling from a machining area; and a hopper-shaped bottom cover having a hole for guiding a machining fluid to a chip bucket below.

A bed serving as a base, a column standing upright at the rear of the bed, and provided on the column so as to be movable in left and right X-axis directions and up and down Z-axis directions to rotate the vertical spindle. A spindle head to be supported, and the X
A hopper having a table provided to be movable in the front and rear Y-axis directions orthogonal to the axial direction and the Z-axis direction, and a hole provided at a low position on both the left and right sides of the table and guiding chips to a lower chip bucket. Bottom cover, and a working fluid tank that is provided in a space between a floor below the left and right bottom covers and stores a working fluid, and a front side between the left and right working fluid tanks and the bottom cover. It is provided so that it can be pulled out,
There is provided a vertical machining center comprising: a chip bucket capable of receiving chips dropped from the bottom cover and allowing a processing liquid to drop into the processing liquid tank in both the extraction position and the storage position.

Also, a bed serving as a base, a column erected at the rear of the bed, and provided on the column so as to be movable in left and right X-axis directions and up and down Z-axis direction, and rotate the vertical spindle. A spindle head to be supported, and the X
A hopper having a table provided to be movable in the front and rear Y-axis directions orthogonal to the axial direction and the Z-axis direction, and a hole provided at a low position on both the left and right sides of the table and guiding chips to a chip bucket below. A bottom surface cover, a working fluid tank formed in a U-shape by communicating with a space between the floor below the left and right bottom covers and a space between the front portion of the bed and the floor, and the working fluid. And a wheel provided so that the tank can be pulled out toward the front.

[0014] Further, relative movement in the X, Y, and Z-axis directions between a spindle, which is rotatably supported with a vertical axis at the spindle head and has a tool at its tip portion detachably mounted, and a table for fixing a workpiece. In a vertical machining center surrounded by a splash guard having a slide door capable of opening and closing around a processing area, the splash guard includes wheels provided at two positions in front and rear of the slide door in the opening and closing direction. A rail on which the slide door is provided, and the rail is provided at a downward slope toward a direction in which the slide door opens, and a recess formed in the rail where a front wheel as viewed in a closing direction falls at a position where the slide door closes, Is formed so that the height position of the front wheel is equal to the height position of the rear wheel when the front wheel falls into the recess as viewed in the closing direction. Shiningusenta is provided.

[0015]

According to the first and second aspects of the present invention, the X-axis guide surface is provided on the front surface of the column, the saddle for moving left and right on the X-axis guide surface is provided, and the Z-axis guide surface is provided on the front surface of the saddle. By providing a Y-axis guide surface for moving the table only in the short side direction of the table, that is, in the Y-axis direction, the distance from each axis guide surface to the machining point can be shortened as much as possible. Moment load due to cutting resistance received on the surface can be reduced.
In addition, by the cooperative action of the splash guard and each cover, chips and machining fluid are prevented from scattering around and entering the guide and feed mechanism, and gravity is applied to the chip bucket below from the hole in the bottom cover. It can guide chips and machining fluid. In addition, a single X-axis cover is configured to collectively cover the upper surface of the processing area where the X-axis guide surface and the spindle head move, thereby reducing the number of parts, that is, simplifying the structure.

According to a third aspect of the present invention, a tip bucket which can be pulled out is provided between the bottom cover of the machining area and the machining fluid tank. In view of the fact that the tip bucket is turned and that the operation of the vertical machining center is performed from the front side of the machine, the fact that the chip bucket can be pulled out to the front means that it can be drawn out to the passage side. The work space is originally provided on the side of the aisle, and space saving is achieved as compared with a configuration in which the work is drawn out to the side or the rear side of the machine. In addition, even when the chip bucket is pulled out, the chip bucket is formed to be long in the draw-out direction so that it can receive chips and processing liquid from the bottom cover and drop the processing liquid into the processing liquid tank, and The machining fluid drop port of the machining fluid tank is also formed long. Therefore, chips accumulated in the chip bucket can be cleaned even during processing in which chips and machining liquid are generated one after another.

According to a fourth aspect of the present invention, the machining liquid tank is integrally formed and housed in a U-shape by utilizing the space on both sides and the front surface of the lower part of the bed, and the machine is made compact. Further, even if the processing liquid tank is pulled out for maintenance, the processing liquid tank is on the passage side, so that space saving is achieved as in the third aspect of the invention. The invention according to claim 5 is characterized in that the rail of the slide door of the splash guard is configured to be inclined downward in the opening direction, so that when the operator opens the slide door for work setup work or the like, the stopping means is specially provided. Even if it is not provided, it will not accidentally close and be pinched. In addition, when the front wheel as viewed in the closing direction at the closed position falls into the recess so as to be at the same height position as the rear wheel, the sliding door is positioned in the closed position in a horizontal state without stopping means. Keeping the door horizontal in the closed position is not only good for its appearance, but also because the sealing means provided on the entire periphery of the door is sealed without creating any gaps. It is also very effective in preventing scattering to the surroundings.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments will be described below with reference to the accompanying drawings. FIG. 1 shows an embodiment of a vertical machining center according to the present invention, and shows a basic configuration of X, Y and Z axes. A column 3 is erected and fixed to a rear portion of the bed 1 serving as a base. A pair of X-axis guide surfaces 3a and 3b are provided on the vertical surface on the front surface of the column 3 so as to be vertically separated. A saddle 5, which is guided across the X-axis guide surfaces 3a and 3b and moves in the horizontal left and right direction (X-axis direction), is provided. The saddle 5 is driven in the X axis direction by a ball screw nut mechanism 7 and an X axis feed motor 9 provided at the left end of the column 3. On the front surface of the saddle 5, a pair of Z-axis guide surfaces 5a and 5b formed in the vertical direction are provided. A spindle head 11 that is guided by the Z-axis guide surfaces 5a and 5b and moves in the vertical and vertical directions (Z-axis direction) is provided. The spindle head 11 is driven in the Z-axis direction by a ball screw mechanism 13 and a Z-axis feed motor 15 provided at the upper end of the saddle 5. The spindle head 11 has an axis parallel to the Z axis, and is a vertical spindle (not shown) that is rotatably supported by the spindle head 11.
Is provided, and a tool is detachably attached to a lower end portion of the main shaft.

On the other hand, a pair of Y-axis guide surfaces 1a and 1b are provided on the upper surface of the front part of the bed 1 in a horizontal direction orthogonal to the X-axis guide surfaces 3a and 3b and the Z-axis guide surfaces 5a and 5b. A table 17 that is guided across the Y-axis guide surfaces 1a and 1b and moves in the horizontal front-rear direction (Y-axis direction).
Is provided. Table 17 is the ball screw nut mechanism 1
9 and a Y-axis feed motor (not shown) provided at the rear end of the bed. In the case of a vertical machining center, the table 17 is usually formed in a rectangular shape having a long left-right direction, and the present embodiment is configured such that the table 17 moves while being guided in the Y-axis direction of the short side direction.
In the present invention, the length of the X-axis guide surfaces 3a and 3b is more than the sum of the X-axis stroke and the lateral width of the saddle 5,
The length of a and 1b is equal to or greater than the sum of the Y-axis stroke and the front-rear width of the table 17, and the length of the Z-axis guide surfaces 5a and 5b is the sum of the Z-axis stroke and the vertical length of the guided portion of the spindle head 11. It is set above. That is, saddle 5, table 17,
Even if the spindle head 11 is moved over a full stroke, it does not overhang from the guide surface.

FIG. 2 shows an embodiment of the covers surrounding the processing area of the vertical machining center of the present invention. It is necessary to enclose the machining area with covers to keep the factory environment good, to ensure the safety of work, and to keep the machine in a normal state without chips and machining fluid entering the moving parts and electrical components of the machine. is there. The front, left and right, both side surfaces, and the front portion of the upper surface of the processing area are covered with a splash guard 21. The splash guard 21 is mounted and fixed on the overhang of the bed 1. On the front side of the splash guard 21, double-sided sliding doors 23a and 23b are provided. Sliding door 2
The front and upper surfaces 3a and 23b can be opened and closed integrally so that the crane can be easily used when setting up the work on the table 17. Further, since the upper surface is open even when the operator puts the upper body into the processing area and works, there is also an advantage that the working liquid attached to the inside of the splash guard 21 does not drip.

At the front and rear sides of the table 17, mountain-shaped Y-axis covers 25a and 25b are provided, and have a structure that expands and contracts as the table 17 moves back and forth. Chips and machining fluid do not enter the Y-axis guide surfaces 1a and 1b and the ball screw nut mechanism 19 by the angled Y-axis covers 25a and 25b.
Also, the chips and the working fluid on the Y-axis covers 25a and 25b flow down to the left and right sides. The bottom covers 27a and 27b for receiving the chips and machining fluid flowing down to the left and right sides, the chips and machining fluid flowing down from the table 17 to the left and right, and the chips and machining fluid flowing down from the inner wall surface of the splash guard 21 protrude to the left and right of the front portion of the bed 1. Section. The bottom covers 27a and 27b are formed in a hopper shape, and have holes at the bottom for guiding chips together with the working fluid to the lower chip buckets 37a and 37b.

At the upper part of the saddle 5, a box-shaped saddle cover 29 covering the entire upper part of the saddle including the upper part of the spindle head 11 is provided. A box-shaped spindle head cover 31 that covers the periphery of the spindle head 11 is nested. When the spindle head 11 moves in the Z-axis direction, the spindle head cover 31 can move up and down inside the saddle cover 29 via a minute gap. The minute gap has a labyrinth structure, and exhibits a sealing effect. Z-axis guide surfaces 5a, 5 below the spindle head 11
The Z-axis cover covering b is provided in the form of a winding cover (not shown).

What is not enclosed in the above description is the back surface and the upper rear portion of the processing area. Normally, in the case of a vertical machining center, since the spindle head can be moved while projecting the upper part of the spindle head to the upper surface of the splash guard, it is difficult to completely cover this part, and the structure tends to be complicated. . In the present invention, the X-axis covers 33a, 33b
The problem is solved simply by setting up. X axis cover 33
a, 33b are formed in an extendable telescopic shape,
The left and right ends are fixed to the saddle cover 29, and the other end is fixed to the inside of both sides of the splash guard 21, and the lower end is movably supported below the X-axis guide surface 3b. The upper end of the splash guard 21 is movably supported on the upper surface of the splash guard 21 also as a cover at the rear of the upper surface of the area.
That is, only the X-axis covers 33a and 33b simultaneously surround the rear surface and the rear surface of the upper surface of the processing area. This contributes to reducing the number of components. Of course, a cover separate from the X-axis cover that covers the rear part of the upper surface of the processing area may be provided. Alternatively, the splash guard may cover the entire upper surface of the processing area including the saddle.

Next, the working fluid tank 35 and the tip buckets 37a and 37b will be described with reference to FIGS. There is a space between the floor below the front part of the bed 1 and the left and right lower parts where the table 17 is placed, and the processing liquid tank 35 is arranged in this space in a U-shape when viewed from above. Chip buckets 37a, 37b are further provided between the bottom covers 27a, 27b and the working fluid tank 35. The tip buckets 37a and 37b cover the bottom cover 27.
A mesh plate is provided at the bottom for receiving the chips and machining fluid dropped from the holes a and 27b, dropping the machining fluid into the machining fluid tank 35 therebelow, and leaving the chips. Chip bucket 37
Each of a and 37b is provided with a handle so that it can be pulled out to the front, and has a structure in which both sides are guided and supported by the machining liquid tank 35. And, even at the position where it is pulled out to the front, it is formed so that it does not deviate from the hole position of the bottom cover 27a, 27b, and the mesh plate of the chip buckets 37a, 37b is located above the machining liquid drop opening of the machining liquid tank 35. I have.

FIG. 3 shows a case where the tip bucket 37a is stored in the back, and a case where the tip bucket 37b is pulled out to the front. FIG. 4 shows the tip bucket 37.
It shows that a is pulled out to the front to clean the chips inside. In this way, the chip bucket can receive chips and machining fluid even when it is pulled out to the front, so that a large amount of chips can be cleaned even during machining. There is no need to stop the machine for chip removal,
This has the effect of shortening the processing time. The machining fluid tank 35 is provided with a machining fluid pump 39, and the collected machining fluid is circulated and used. The machining liquid tank 35 is provided with wheels 35a and a handle so that it can be pulled out to the front.

When a vertical machining center is installed in a factory, the operator normally operates while standing on the front of the machine, so that the operator originally stands on a passage having a space, thereby saving space. . In addition, maintenance work such as cleaning of the tip buckets 37a and 37b and replacement of the working fluid in the working fluid tank 35 is usually performed on the rear side of the machine. However, in the vertical machining center of the present invention, it can be pulled out to the front. Therefore, space is also saved in this respect. Processing fluid tank 35 and chip bucket 37
a and 37b are stored in the space just between the bed 1 and the floor, and also serve to make the entire machine compact.

Next, referring to FIGS. 5 and 6, the opening and closing mechanism of the slide doors 23a and 23b of the splash guard 21 will be described. FIG. 5 is a front view of the machine viewed from the front side,
It can be seen that double-sided sliding doors 23a and 23b are provided at the center of the splash guard 21. The sliding doors 23a and 23b are provided with windows reinforced with a grid-like iron plate so that the inside can be safely viewed from the outside during processing. Each of the sliding doors 23a and 23b includes wheels 23c and 2 provided on the sliding doors 23a and 23b.
3d, 23e, and 23f can slide by sliding on the rail 41 provided on the splash guard 21. The upper support of the slide doors 23a and 23b and the sealing of each part of the slide doors 23a and 23b and the splash guard 21 are performed by a known method.

Referring to FIG. 6, wheels 23c, 23d, 23
The relationship between e, 23f and the rail 41 will be described in detail. The wheel sliding surface on the rail 41 is formed in a loose mountain shape with a watershed at the center of the opening of the splash guard 21 in the X-axis direction. That is, it is formed to be inclined downward in the opening direction of the doors 23a and 23b. Therefore, the sliding door 23
a, 23b are always urged to open. This is because when the worker opens the slide doors 23a and 23b and performs a work setup operation or the like, the slide doors 23a and 23b do not inadvertently close and are caught without providing a stopping means. is there. The rails 41 are formed with depressions 41a, 41b into which the front wheels 23c, 23e fall when viewed in the closing direction when the sliding doors 23a, 23b are closed. The front wheels 23c and 23e and the rear wheels 2 when the front wheels 23c and 23e are recessed in the depressions 41a and 41b.
The rail 41 is inclined so that the height positions of 3d and 23f are equal to each other (see H in FIG. 6). Therefore, when the sliding doors 23a and 23b are in the closed state, the front wheels 23
Since c and 23e are recessed in the depressions 41a and 41b, they serve as a stopping means.
The slide guards 23a, 23b and the splash guard 21
And the sealing means of each part between them can keep the sealed state. The sliding doors 23a and 23b do not open due to vibration during machining, but when opened manually, the front wheel 2
A slight force is required to roll 3c, 23e out of recesses 41a, 41b, but this is not significant. With the configuration of the sliding door, the effect of ensuring safety without providing a fastening means could be achieved. In the present embodiment, the case where the wheels and the rails are provided at the lower part of the slide door has been described.

[0029]

According to the present invention, since the X, Y and Z axis guide surfaces are brought as close as possible to the machined portion, the moment load caused by the cutting resistance applied to each axis guide surface can be reduced. In addition, the structure was hardly deformed. As a result, the processing accuracy was improved. In addition, the machining area was surrounded by splash guards and covers, and chips and machining fluid could be reliably dropped onto the bottom cover. Further, by arranging the machining liquid tank and the chip bucket in the space below the bed or by pulling them out to the front, the machine can be made compact and space saving that does not require a special space for maintenance is achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of X, Y, and Z axes according to an embodiment of the present invention.

FIG. 2 is a perspective view showing covers surrounding a processing area according to the embodiment of the present invention.

FIG. 3 is a perspective view of a working fluid tank and a tip bucket according to the embodiment of the present invention.

FIG. 4 is an explanatory view showing a chip bucket chip cleaning method according to an embodiment of the present invention.

FIG. 5 is a front view of the vertical machining center according to the embodiment of the present invention.

FIG. 6 is a principle view of an opening / closing mechanism of a slide door of a splash guard according to an embodiment of the present invention.

[Description of Signs] 1 Bed 1a, 1b Y-axis guide surface 3 Column 3a, 3b X-axis guide surface 5 Saddle 5a, 5b Z-axis guide surface 11 Spindle head 17 Table 21 Splash guard 23a, 23b Slide door 25a, 25b Y-axis Cover 27a, 27b Bottom cover 29 Saddle cover 31 Spindle head cover 33a, 33b X-axis cover 35 Working fluid tank 35a Wheels 37a, 37b Tip bucket 41 Rail 41a, 41b hollow

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B23Q 1/00 B (72) Inventor Daisuke Shigemura 4023 Nakatsu, Aikawa-cho, Aiko-gun, Kanagawa Pref. Makino Milling Machine Co., Ltd. F term (reference) 3C011 BB21 BB22 BB31 DD01 DD02 DD03 DD06 3C048 EE06

Claims (5)

[Claims] A bed serving as a base, a column erected on a rear portion of the bed, a saddle moving along an X-axis guide surface provided in a horizontal direction on a front surface of the column; A spindle head that moves along a Z-axis guide surface provided in the vertical direction on the front surface of the saddle and rotatably supports a vertical spindle, and the X-axis guide surface and the Z-axis guide surface at the front of the bed. A table that moves along a Y-axis guide surface provided in a horizontal horizontal front-rear direction, a splash guard that covers a front surface, left and right side surfaces, and an upper surface of a processing area, left and right sides of the saddle, and right and left sides of the splash guard An X-axis cover that is extendably provided between the table and the X-axis guide surface, between the front surface of the table and the front surface of the splash guard, and between the rear surface of the table and the front surface of the column. To A Y-shape cover which is provided to be extendable and contractable and has a chevron shape inclined downward in the left-right direction, and which covers the Y-axis guide surface; and a Z-axis cover which covers the Z-axis guide surfaces above and below the spindle head. And a hopper-shaped bottom cover provided between left and right sides of the table and both side surfaces of the splash guard, and having a hole for guiding chips and a machining fluid falling from the machining area to a lower chip bucket. A vertical machining center characterized by having: 2. The vertical shape according to claim 1, wherein an upper surface of the processing area is covered by a front upper portion of the splash guard and a rear upper portion formed integrally with the X-axis cover. Machining center. 3. A bed serving as a base, a column erected at a rear portion of the bed, and provided on the column so as to be movable in left and right X-axis directions and up and down Z-axis directions, and a vertical spindle is provided. A spindle head rotatably supported; a table provided at a front portion of the bed so as to be movable in a front and rear Y-axis direction orthogonal to the X-axis direction and the Z-axis direction; and a table provided at a low position on both left and right sides of the table. A hopper-shaped bottom cover having a hole for guiding chips to a lower chip bucket, a machining fluid tank provided in a space between a floor below the left and right bottom covers and a machining fluid, and a left and right machining fluid tank. A drawer is provided between the working fluid tank and the bottom cover so as to be able to be pulled out to the front, and can receive the chips dropped from the bottom cover in the drawn position and the storage position, and the working fluid can be dropped into the working fluid tank. A vertical machining center comprising: a chip tip bucket; 4. A bed serving as a base, a column erected on a rear portion of the bed, and provided on the column so as to be movable in left and right X-axis directions and up and down Z-axis directions. A spindle head rotatably supported; a table provided at a front portion of the bed so as to be movable in a front and rear Y-axis direction orthogonal to the X-axis direction and the Z-axis direction; and a table provided at a low position on both left and right sides of the table. A hopper-shaped bottom cover having a hole for guiding chips to a chip bucket below, a space below the left and right bottom covers and a space between the floor and a space between the front of the bed and the floor. A machining fluid tank formed in a V-shape, and wheels provided so that the machining fluid tank can be drawn out toward the user. 5. A relative movement in the X, Y, and Z-axis directions between a spindle, which is rotatably supported with a vertical axis at a spindle head and has a tool at its tip portion detachably mounted thereon, and a table for fixing a workpiece. In the vertical machining center surrounded by a splash guard having a slide door capable of opening and closing around a processing area, the splash guard is provided at two positions in front and rear of the slide door in the opening and closing direction. The rail is provided with a downward slope toward the direction in which the slide door opens, and a recess is formed in the rail in which the front wheel as viewed in the closing direction falls at a position where the slide door closes. The inclination of the rail is formed so that the height position of the front wheel is equal to the height position of the rear wheel when the front wheel falls into the recess when viewed in the closing direction. Vertical machining center, which was characterized by.